diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index cb10811..91b2146 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -117,7 +117,7 @@ jobs:
           ruby-version: '2.7'
           bundler-cache: true
       - run: gem install mixlib-shellout -v 3.3.8
-      - run: gem install mdl
+      - run: gem install mdl -v 0.14.0
       - uses: dtolnay/rust-toolchain@a3ac054b2e7d62f514aa1bd57e3508c522fe772d # 1.68.2
         with:
           toolchain: nightly-2025-04-01